# The Image Format Converter vs cairn

The clearest difference is price: cairn at Free against The Image Format Converter's $2.99. cairn also leads on update cadence (weekly vs every 3 months). The Image Format Converter's advantage is ratings volume (5 vs 1) and device support (3 vs 1). On rating, ads and in-app purchases there is nothing between them.

cairn is free to download; The Image Format Converter costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 5.0 for The Image Format Converter against 5.0 for cairn. That said, the two scores are not equally well evidenced: The Image Format Converter has 5 ratings behind it against 1, so its average is the more settled of the two.

The Image Format Converter ships an update every 3 months, cairn weekly. The most recent releases landed on November 6, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | The Image Format Converter | cairn |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | [5.0 (5 ratings)](https://appshunter.io/ios/app/the-image-format-converter/id1351684330/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/cairn-immich-sync/id6763392945/reviews) |
| Number of ratings | **5** | 1 |
| Positive reviews | 69.2% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Weekly** |
| Monetization | Paid | **Free** |
| Size | 1 MB | 8 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Dongwook Cho](https://appshunter.io/developer/1615253426) | [Graham Larue](https://appshunter.io/developer/1873829108) |

## What reviewers say

### The Image Format Converter

[App page](https://appshunter.io/ios/app/the-image-format-converter/id1351684330)

Easily convert images between various formats including HEIC, JPG, PNG, BMP, TIFF, and PDF. This app supports batch conversions, image resizing, and metadata preservation, allowing you to manage your photos efficiently.

**Highlights:** Cross-format conversion (HEIC, JPG, PNG, BMP, TIFF, PDF), Batch conversion with no limit, Image resizing, Metadata preservation (including EXIF), Convert individual PDF pages to JPG, Save and share converted images in bulk, Option to delete original files

**Features:** Vision Pro support

**In-app purchases:** none


### cairn

[App page](https://appshunter.io/ios/app/cairn-immich-sync/id6763392945)

This app synchronizes your iPhone photo library with your Immich server. It automatically moves photos deleted from your phone to your Immich trash, ensuring consistency. The app prioritizes safety with features like a quarantine window and trash-to-restore functionality.

**Highlights:** Syncs iPhone deletions to Immich, Moves deleted photos to Immich Trash, Configurable quarantine window, Trash-to-restore functionality, Percent cap and floor for safety, Exclusion options for specific photos, Restrict indexing to specific albums

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is The Image Format Converter free?

The Image Format Converter costs $2.99, with no in-app purchases.

### Is cairn free?

cairn is free to download, with no in-app purchases.

### Which has better reviews, The Image Format Converter or cairn?

The Image Format Converter and cairn are both rated 5.0 out of 5 on the App Store, from 5 and 1 ratings respectively.

### Do The Image Format Converter or cairn have ads?

Neither The Image Format Converter nor cairn shows ads.

### Which is updated more often, The Image Format Converter or cairn?

The Image Format Converter ships an update every 3 months, and cairn weekly. Most recently, The Image Format Converter was updated on November 6, 2026 and cairn on October 31, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*